The owners of a home in Yellowknife are expected to save more than $4,800 a year on energy bills because of energy-efficient renovations. Before starting the renovations, the homeowners had the Arctic Energy Alliance complete an EnerGuide home evaluation, which measures the energy used by a house and identifies areas for improvement.
The pre-renovated home was expected to use about 428 GJ of energy a year under standard operating conditions. Following the evaluation, the homeowners:
- replaced the oil furnaces with high-efficiency propane furnaces
- replaced the oil-fired hot water tank with a tankless propane water heater
- added insulation to a portion of the main wall
- replaced all windows with triple-pane vinyl windows
- replaced all doors with polyurethane-filled steel doors
- sealed drafts to reduce the air leakage by 10 percent
- installed a wood stove
The new furnaces, water heater, windows and doors were all ENERGY STAR® certified.
After the renovations were completed, the follow-up EnergGuide evaluation found that the house would expect to use roughly 304 GJ of energy a year—a savings of 29%.
Estimated Annual Savings
|House Component||Renovation Details||Annual Energy Savings (GJ)||Annual Cost Savings|
|Air tightness||10% improvement|
(Air changes per hour decreased from 5.06 to 4.53)
|Doors||Polyurethane-filled steel doors||14||$460|
|Heating system||96% AFUE condensing propane furnaces|
(from 83% EF oil furnaces)
|Wall insulation||R8 semi-rigid insulation added to wall section||5.3||$450|
|Water heater||0.91 EF tankless propane water heater|
(from 0.54 EF oil-fired tank)
|Windows||Triple-pane vinyl windows||36||$1,300|
The above data is based on EnerGuide standard house conditions and 2018 fuel prices in Yellowknife.
In addition, the wood stove installed in the home should help save $900 per year if used about half the time.
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